Watchmaker&#39;s instrument.



-c..A: BRAUN. WATO'HMAK'ERS INSTRUMENT.

APPLICATION FILED DEC. 2, 1907- Patented Apr. 20 1909.

W [Wm/Wok Q WITNESSES lg 'gjg A liar/my the stem. to the slide. A spring pressed button 15, mounted in the recess in the rear, edge of the supporting plate isadaptedto frictionally engage the interior of the watch case and hold the gage in place therein. The gage is also provided with finger holds 16, for handling the same. I

In use, the device is placed in the empty watch case, the stem of the case being guided to engagement with the head of the slide.

The slide is depressed by the stem causing the pointer-to indicate upon'the scale. It the stem is of thesproper length-for both the winding andsetting positions, the'pointer will so indicateupon the scale and no adjust--' ment of the stem is necessary, but if the stem is either too long-or too short, the pointer will so indicate; I The device is then given a slight twist orrotary' movement in the case, which movementcauses the squared. end of the stem to become wedged in the narrower portion of thekeyhole slot and the stem is locked against turning; The crown may then be removed from-the stem'and the pendant sleeve maybe turned to adjust the projee tion of the stem into the watch case. The

pendant sleeve is, thus adjusted until the pointer shows thatthe .stemis of the proper length.

- If so desired, the keyhole or wedging slet for holding the stem'may be formed direct 1n the rim of the supporting plate and the slide may have. a fiat head to be engaged by the stern.

Other forms of indicating mechanism may also be employed, as for instance, the one shown in Fig. 5. Here the slide has a series of teeth or rack 17, along one edge which mesh with the segmental pinion 18, on the head of the pointer 19, the pointer being pivoted at 20, to one side of the slide and adapted to register upon the scale 21.

In this instance, .I haveshown the slot for holding the stem as formed direct in the rim of the supporting plate at 22, and the slide as having a plane head 23, to be engaged bythe stem. The operation of this form of gage is set forth.

I claimi- 1. A gage for indicating the proper stein length for watches and the like instruments comprising a back plateto be received in.

- thewatcli case, a slotted plunger having a head to he engaged by the stem, fastening means passing through the slot in the plunger for s curing the-same and permitting SllCllng movement thereof, and indicating niiechanism.operated by the plunger.

2. ,A gage for indicating the proper stem length for watches comprising a back plate to be inserted in a watch case, a slotted depressible plunger having a head to be contacted by the end of the stem, a spring forcing-the plunger outward, means passing through the slotted portion of the plunger for slida'blysecuring the plunger in place, and

indicating means operated by the plunger.

A watchmaker's instrument comprising -a back plate to be received. in a watch case.

friction means carried by the back plate for holding the same within the case, means carried by the back plate for holding the watch stem against rotation, a slotted plunger, means slidably confining the plunger to the back plate, a spring holding the plunger in engagement with the stem, and indicating means operated by the plunger.

l. A device of the character set forth comprising a back plate to be received in a watch case, a plunger slidably mounted on the back plate and adapted to be engaged by the stem of a watch, the back plate having meansfor guiding the stem to engagement with the plunger, an indicating pointer mounted on the back plate and an angular projecting portion on the pointer connecting the pointer to the plunger. and a spring forcing the plunger outward.

5. A watchmakers instrument comprising a supporting member having means for receiving and holding a watch stem and means for guiding the stem to engagement with such receiving and holding portion, a depressible plunger mounted on the supporting member to be engaged by the stem, a pointer pivoted upon the supporting member, an angular member on the pointer connecting the pointer to the plunger, the supporting member having a scale provided with indications upon which the pointer is adapted to register. a spring tending to hold the plunger outward,

and graspin means for handling the sup- 1 porting member.

In testimony whereof I ailix my signature in presence of two witnesses.

' CHAS. A. BRAUN; Witnesses EMU. It. Znrs, ADoLPn F. DoBnowsKr: 

